Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8421567 | Method for production of a pole face of a metallic closing element of an electromagnet | Johann Hofrichter | 2013-04-16 |
| 7861402 | Method for production of a pole face of a metallic closing element of an electromagnet | Johann Hofrichter | 2011-01-04 |
| 7328498 | Method for producing the surface geometry of solenoids | Ralph-Ronald Gobel, Johann Hofrichter, Matthias Knab, Norbert Mitlmeier, Norbert Zimmermann | 2008-02-12 |